> Also, databases could, in theory, be accessed from multiple instances;
> however, in practice, DBAs set up a database to be accessed from only one
> instance (and no other instance).
Except for parallel server / real application clusters where multiple instances
against a single database is the norm.
> So, you can have two databases, two instances, and two services on the same
> NT server. You'll also need two listeners and two services to run those
> listeners.
I'm not sure about NT, but, in general, two listeners are not necessary. A
single listener can service multiple instances.
-Don Granaman
[OraSaurus - Honk if you remember UFI!]
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Author: Don Granaman
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